package com.common.util;

public class UnicodeUtil {
	public static void main(String[] args) {   
        String s = "林业厅信箱";   
        String tt = gbEncoding(s);   
        System.out.println(decodeUnicode(tt));   
    }   
  
  
    public static String gbEncoding(final String gbString) {   
        char[] utfBytes = gbString.toCharArray();   
        String unicodeBytes = "";   
        for (int byteIndex = 0; byteIndex < utfBytes.length; byteIndex++) {   
            String hexB = Integer.toHexString(utfBytes[byteIndex]);   
            if (hexB.length() <= 2) {   
                hexB = "00" + hexB;   
            }   
            unicodeBytes = unicodeBytes + "\\u" + hexB;   
        }   
        System.out.println("unicodeBytes is: " + unicodeBytes);   
        return unicodeBytes;   
    }   
  
    public static String decodeUnicode(final String dataStr) {   
        int start = 0;   
        int end = 0;   
        final StringBuffer buffer = new StringBuffer();   
        while (start > -1) {   
            end = dataStr.indexOf("\\u", start + 2);   
            String charStr = "";   
            if (end == -1) {   
                charStr = dataStr.substring(start + 2, dataStr.length());   
            } else {   
                charStr = dataStr.substring(start + 2, end);   
            }   
            char letter = (char) Integer.parseInt(charStr, 16); // 16进制parse整形字符串。   
            buffer.append(new Character(letter).toString());   
            start = end;   
        }   
        return buffer.toString();   
    }   

}
